Turtlewax Chrome Polish and the finest steel wool possible--I used to detail Porsche's/Ferarri's/BMW's... we tried lots of stuff but Turtlewax always worked the best and was the cheapest. Do NOT make the mistake of assuming anything polished is "chrome" as many people do. Polished surfaces will want a good aluminum polish (again I recommend Turtlewax), and the finest steel wool on oxidized surfaces, or polishing cloths on non oxidized surfaces.